A corpora



Dec. 4 1923.

A. F. w. GROGEL. ET AL ADDING, CALCULATING, AND RECORDING museums Filed g. 11. 1920 4 Sheets-Sheet 1 INVENTORS. ALEXANDER EWZ GROGEL 5,9 BRUCE H 'T'INGLEK BY 5 3E A F W GROGEL ET AL ADDING, CALCULATING AND RECORDING MACHINE FLlQd Aug. 11, 1920 4 Sheets-Sheet 2 INVENTORJ. ALEXANDER EW. GROGEL m BRUCE H. 'T'INGLE Y,

BY I A770 EYS.

Dec. 4 1923. v 1,4755944 A. F. w. GROGEL ET AL mums, CALCULATING, AND RQbanmc-ucnms Filed Aug. 1-1, 1920 4 Shasta-Sheet 3 INVENTORJ. ALEXANDER F. W. GROGEL e71? BRUCE H. 'T'INGLE 1 BY 333R Dec. 4 1923.

A. F. W- GRQGEL ET AL ADDING, CALCULATING, AND RECORDING madam! 4 sheets-51161;. 4

Filed Aug. 11, 1920 n 0 I m 8 R, m ma m wnm m mmm m DH ME 0 .wm u Am ORNEY Patented Dec. 4, 1923.

UNITED STATES PATENT 0FI lCE ALEXANDER F. 51W, GROGEL AND BRUCE H. TIIlGLEY, OF NORWOOD, OHIO, ASSIGNOBS TO THE DALTON ADDING IiIIACHINE COMPANY, OF CINCINNATI, OHIO, A. CORPORA- TION OF OHIO.

ADDING, GALCULATIliTG, AND RECORDING MACHINE.

Application filed August 11, 1920. Serial No. 402,830.

invention which may be usefully employed in machines which do not'contain recording mechanism. Therefore, we do .not restrictor limit ourselves to 'use of thefinvention in connection withf'recording' mechanism,- except in such of the jappended claims asjim elude recording im'echnnism as subject-matter claimed in such 0 aims.-'

For convenience of illustration- "and description, we have shown the invention e'm'' bodied in an adding machine of the Dalton type which, comprises recording mechanismi for listing items or numbers which are in volved in the calculations or additions performedby the machine. I

It sometimes occurs that in operating add-- ing machinesto list or to add a s'eriesof items, one or more items may be erroneously listed and added or included in the calculations performed by the'niachinei instances the'item o'r items included throu h error may besubtracted, thus correcting t e error. Ourpresent invention comprises; mechanism for simplifying the operation of correcting errors, and in case the machine comprises recording i er'zl'ianism, it is desirable to designate the item or items subtracted so that it may be known at a glance that such items are" not included in the calculations listed, but that such items were listed through error and were subsequently corrected.

An object of the present inventionis to provide mechanism of the character and'operablc to perform theresults and functions art of the designate the subtracted-items and to pre- In suchabove mentioned, as well as other desirable results and functions appearing from the following description taken in connection with the accompanying drawings. in which Fig. 1 is a side elevation of a Dalton adding machine containing our present invention, the case of the machine and a few of the shafts and frame parts being in section. Fig. 2 is'an elevation showing the (am? nections for 'printing'a'designating charactor to designate the snbtrahend items and for controlling the adding raid; in un'itsorde'r to add 1 in units order as required to c'om plate the complementary number'tor'enderj the operation of subtraction 'properl" In this: view of the drawings the mechanism" is shownin idle position. '1 ;Fig.3 isa view showingthe same mecha nism in operativepositioni "Fig. 4 is a 'view showing-the" printing mechanism, including the devicecontrolljng the 'printingof a designating character to vent the printing "of the complementary ber fii" V Q'i'g fi -H t .;:-\i:7 1

f'Figfishows an example 'of the work in: subtracting that may flie "performed by} the machine. f

The Dalton adding machine in which we have s'hoii'n the invention comprises differential mechanism 1 in which the numbers are set upby operationof the numeralkey levers 2 in the 'usual manner. After each number has been set 'upfi'n the differential mechanism the type-carriers 3 and their associated'racks 4 are operated in the well known way to list or'print the numbers onpaper, andto introduce or add the numbers:

in the adding mechanism 5 'The type sup-'' ported: by the type-carriers are driven by appropriately mounted hammers'fi'w-s re' quired to list the numbers 'on the paper. The hammers are pivotally supported upon a shaft 7 and are driven against thetype;

at the proper timeby springs- 8, provided for thatvpurpose. Eachhamti'ier is formed with a latch arm 9 arranged tobe engaged and held in a retracted position 'by a'hook 10 on a releasable latch member.

The latch members also havearms 11 which are engaged by projections 12 on the type-carriers with which said latch members, respectively, correspond when the type-carriers are at rest in their normal or idle positions. Thus the latch members for the hammers are held in their lower positions in opposition to the tendency of their springs 13 to raise the rear ends of the latches. When any one or more of the typecarriers are moved to recording position the projection 12 on such type-carriers as move to recording position are carried away from and out of contact with the arms 11 of the corresponding latches; thus permitting such latches to be raised by their springs 13 n sufficient distance to place the shoulders 14 on the raised latches in front of a latch release bar 15.

The latch release bar 15 has one end pivoted upon a stationary support 16 and its opposite end connected with a lever 17 beyond the opposite side of the series of latches so that said latch barextends entirely acrossan d above theseriesof latches.

The lever 17 is pivoted upon a-support 18 and has an arm carrying a rollerll9 operating on a cam 20. The cam 20 is supported from the main shaft 21 of the machine and in idle or rest position-holds the lever 17 1 actuated rearwar in the position in which the bar 15 is above the shoulders 14 on the latches; so that the shoulders 14. cannot engage in front of the bars 15. The up erendof-the lever 17 is d lyby a. spring 22 and in the normal or idle position-0t the machine said lever is held in its forward position above the shoulders l tby the cam.20 in op osition to the spring 22. y a

or present purposes it is suflicient to know that the main shaft 21 ofthe machine is turned in a forward direction after each number is set up in the difl'erential mechanismin order to permit the proper typecarriers to advance I to proper recording position. Such forward turning movement of the shaft 21 advancesthe; cam 20 to position to permit the spring'22 to move the upper end of the lever 17' rearwardly as required to move the latch release-bar 15 rearwardly a suflicient distance to permit the shoulders 14 of the latches whose type-carriers have advanced to rise in front of the latch bar. After the shaft 21 has completed its'forward turninglmovement, it is turned rearwardly to its starting point, thereby causing the cam 20 .to operate the lever 17 which movesthe latch. release bar 15 forwardly thusdisengaging the latches which had been engaged withsaid latch bar from their corresponding hammers, and permittingthe hammers tobe operated by their springs 8 as required to drive the type to print.

-When it occurs that any-item hasbeen erroneously listed and included within the addition or calculation and such error is not discovered until after the completion of the listing and calculation operation of the machine such error may be corrected. In such case; the complement of the number erro neously listed and included within the addition's'an'd calculations is introduced into the differential mechanism of the machine by operation of the complementary numeral keys; with the exception that the digit in units order lacks 1 of being of sufficient value, and with the further exception that the in the higher numerical orders above the highest numerical order of the subtrahend need not he struck on the keys but will be automatically introduced into the calculation.

-To effect the automatic introduction of the.9s for; the purpose mentioned the usual abutment plate 23 is depressed out of the way of; the shoulders 24 on the racks 4. The mechanism included in the machine shown for depressing the abutment plate 23 and with which our invention is cooperatively related. comprises a lever 25 operable by a link 26 to depress. the abutment 23 in any position of the differential mechanism. The forward end of the link 26 is connected with a lever 27 supported on a rock shaft 28which is connected up with the mechanism. comprising our present invention. The lever 27 supports a bifurcated member 29 embracing-the latch release bar 15 between the arms thereof and arranged to stop rearward movement of said bar 15 to prevent said bar from moving far enough to permit the shoulders 14: to engage in front thereof. The construction and arrangement inthe machine shown is such that the latch release bar will not release hammer latches when the mechanism ofour invention is operated. This prevents the printing of the complementary number in the process of subtraction, but permits functioning and operation of our invention to obtain the desired result and to print a designating character adjacent to the subtrahend number.

The Dalton adding machine also includes springs 30 for operating the racks 4 in transferring operations.. When said racks are not operating in transferring operations they are stopped in their normal or idle positions by lugs 31 thereon engaging the hooked ends of abutments 32 which are raised by the adding pinions in the usual manner in transferring operations. The transferring operations in the Dalton adding machine are well known and do not require further description. Our invention comprises means arranged to operate at the proper time to raise the abutment 32 in the lowest or units numerical order to permit the rack which operates the units .adding pinion to move rearwardlyas though a transferring operation was taking place in connection with the Inn number or total that had previously been set up or represented in theadding mechanism. This means we-will nowdescribe. 7

As shown, the subtraction controlling device or keycomprises a key 33 upon an ap propriately formed. lever 34 pivotally mounted upon a shaft 35. The key lever 34 is held in its raised position by" an appro v priatelyrOnnected sprin 36. The subtracting key lever is hBldlILltS depressed or operative position as long. as required by a latch device comprising a projection .37 .on the lever which engages under ashouIder 38 formed on a latch member 39 when the' lever is in its depressed positiom A. spring 40 connects the, key lever 34 vwith the pivoted latch 39 so as to cause proper releasable latch engagementbetween said parts when the key lever is depressed. The latch 39 support; edupon apivot 41 and hasan extension '42 inithe lineof movement ofan arrn,43 on the rock shaftlQL; As a, resultof thisiconstructio'h'; and arrangement thelatchjwill hold thef lever' f34..in;its,.de pps ition until the shaft21reach'est e' final 1' ortion, ofits forward turning movement. 5 ust before the shaft 21 complotes, .its .fo'riirard;turning movement the arm 43ion said sliajtepgages the extension 42 on the latch member and releases the,. latch, thereby permitting the leverf34 at the proper timeto' fbe'raised to its normal position, by its-spring 36; a result of the depression of the leverj34the mechanisms of the present invention.. are caused tojunctioii when thejshaft gl lis op; eratedj 1 W f. '7

We will now describe the means bvfwhieh the full complement of the jsubtrahend is utilized to correct the error resulting froni entering into the calculation and listing the erroneous item. a I a In the example sh 'wnin Fig, the item 2457-was entered'intQ the calculations and listed through error. 7 This item should not have beenentered into the calculations and should not have been listed. In order to correct the error a nd remove this item from the calculations the complementnumber for the number 2457, less 1,i's set :upinthe difi'erential mechanism in the usual "way,

' after which the key lever 34 isdepressed and latched in its vdepressed position, following which operation the machine is operated as though an ordinaryitem was being added and listed. The complementary number of the number 2457, less 1, is 7542, and therefore the number 7542 is set up in the differential mechanism. After the complement number has been set up in the differential mechanism the key lever 34 is depressed,

causing an arm 44 on said lever 34 to raise an. arm 45 which is attached to a rock shaft 46 and which has a in 47 engaging the arm 44. The rock sha t 46 supports an arm 48 from which a link 49 leads to the lower arm of the lever 27. As a result of this construction the abutment plate 23 is depressed to permitthe automatic introduction of the 9s in'higher numerical orders in subtracting operations, as'above explained. It will be seen from the following description that the key lever controlling the addition of 1 into units order also controls the introduction of the 9s in the higher numerical orders.

As previously stated. it is necessary to enter into the calculations in units order adigit which is the full complement of the digit in units order in the error item. That is, it is necessary to enter into the calculation inunits order a digit which added to the digit in units order in the error makes 10, soa s to transfer 1 from units order to tens order, and transfer 1 from tens order to hundreds order,'and transfer 1 from hundreds ordert'o'thousands order, and so on throughoiitjthe full capacity of the machine which,

mentary to the error, lacks 1 in units order (if-being the full complement of the error niliilber 2457. To complete the full complementourinvention comprises means for addingglinto units order automatically and as an incident to operationof the machine in a subtracting operation, so as to make a full complement of the error number.

,"'In"order: to permit the transfer of .1 into units order inaddition to the digit set up in units. order in the complement number, as required to complete the full complement, theiabiltme'nt 32in units order is raised from theusual position shown in'Fig. 1 to permit the units rack to move rearwardly as though a transferring operation was taking lsce from'alower numerical order, as in case ofaddition of fractions, in an example. of addition. The device for raising the abutment '32 forthe units rack comprises a'lever 5Q pivoted on a support 51 and havingya projection 52 extending under the abutment 32 cooperating with the units rack Inforder to raise the abutment 32 controllingthe rackin units order, it is only necessaryto operate the lever 50. For this pru'pose wc provide an actuator 53 which, in case the invention is employed in an adding, calculating and recording machine, may be the type-carrier used to carry special typo for printing designating characters such, for instance, as a character for designating items thatlhad been listed by error. As shown, the actuator 53 isa type-carrier and a special type 54 for printing a designating character, andarranged to be driven by a special one of the hammers 6. The actuator 53 su ports a projection 55 which may be cause to engage with and operate the lever 50, as required to raise the abutment 32 controlling the units rack. The actuator 53 is held from functioninowhen the machine is being' operated in ordinary adding and call culating operations, not involving subtraction or other special operations. For preventing cfi'ective operation of the actuator 53 a projection 56 is provided on said actuator and arranged to en age a shoulder 57 on a pivotaily supported stop member 58. As shown, Fig. 2, the projection 56 and the shoulder 57 are arran ed 'relative to each other in order to permit slight movement of the actuator 53 which. in the form shown, is a type-carrier. Provision is made for this movement in order to permit the type-carrier to move far enough to place the up "1-- inost type thereon in proper position iela We to the printing line. Such movement is illefiective to cause operation of the; levi 50. In order to cause operatio'ii of the lever 50, as required to raise the a 'ut'nientBB'in units order,- it is necessar to more th stop member 58 to place a shoulder 59 on said stop member in position to he engage "y the projection 56. Siic'h movement of the actuator 53 is "sufiicint tb; cause the projection 56 to operate'the levi fig, resulting in the raising of the ahiitineiit 32in units order and permitting the reek in uiiitsoider to be moved rearwardlyby its spring. 30 a distance sufficient to trainsfer 1 into units order. This will complete the introdustion into the calculation of the full complement of the item that had been erroneously entered into the calculation and listed. v

The stop member 58 is moved to adjusted position to permit movement oi the combined type-carrier andactuat-or 53 to trip the abutment 32 and to position the proper. type for printing a designating character adjacent to the erroneous item as an inident to operation of the key lever 34. a'rin ($0 in connection with the key lever? extends behind a projection til-on a link 62 so that when the key lever is operated the iii! will be moved in a forwfard direction. T e forward end of the link 62 is supported by a pin-and-slot construction 63- and the real" cnd of said link is pivoted to a depending" arm in connection with the stop lnenib'ei tis. The stop member-58 is thereby operated to a position in which the shoulder 59 isjn ,t '0 line of movement of the projection thus. permitting the actuator and type-carrier 53 to move to the position sheen in Fig.3. When the key lever 34 is released from the latch member 39, as above ascribed, iiud re: turns to its normal position, the link sailed the stop member 58 are returned to' their normal positions by a s ring 64. a

As before stated, th latch release bar amen 15 during this operation is held in position to prevent the'shoulders 14 on the hammer latches from rising in front of the latch bar by means of the bifurcated member 29. However, the bifurcated member 29 does permit the latchbar 15 to move a distance sufficient to permit the shoulder 65 on the special latch which coo crates with the type-carrier 53 to rise in out of the latch bar 15 when a subtracting operation is being performed. The cam 20 in its return movement then actuates the latch bar 15 a distance 'siifiieient to release the special latch from the hammer 66 coo eratin with the type 54, thereby driving t s special ty 2 54 to print the designating character 67, s iown ig. 5, adjacent to the subtracted item which had been listed and entered into the calciilationsas a result of error.

From the foregoing, it will be seen that our invention completely serves its intended purposes, and that its cooperation with the i g'iilar mechanism of the fnachine is simply ahdeasily effected. We esteem platesn'ch va'riatidas i the inventian as may be necessary to. adapt it for difi'erent of machines, and we do not restrict our selves as a' essential {snares or limitations.

What we claim and desire to secure by Letters Patient, is

1. In a dalculatin maehiiie, the combina tioii with a units add ing pinion, a rack meshin'g with said pinion in vall operations of the pinion and being movable in one direction to operate the pinion in all adding 0 erations thereof a ivoted abutmeat for limiting fi weme t' or said rack in said direction to revent transfer operation of said rack an pinion, a lever for displacin'gsaid abntment to permit said raok to movetooperate said pinion iiia transfer operation, and means for reoiding an iridictttidn of the tact that said a mutat d-been performed.

a. In a then sang ina'chiiie, the comm-nation with a units adding pinioii, a rack meshing with said inicri in all operations of the pinioii and iieiiig movable iii one direction to operate the pinion in all adding of)- eration's thereof, a pivoted abu'tinent for limiting movement of said rack in; said di rection to prevent transfer operation of said rack and pinion, a evertor displacing said abutnient to permit said their to move, to operate said pinion in ii tiansfer operation. an actuator for 0' dating said lever', and means controlled y said actuator for recording an indicaltidii of the fact that sziid operation had been performed.

3. In a calculating machine, the combination with :1 units adding pinion, a raelr ineshing with said pinioii in an operations of the pinion and being movable in one direction to operate the pinioi'i in all adding operations thereof, a pivoted abutment foi liini ing mvement of sin rack in said direction to prevent; traiisfers,operatieii ofs'aid rack and pinionfa lever for displacing said abutment to permit said rack to move to operate said pinion in atransfer operation, an actuator for operating said-lever, and mechanism operating automatically and as an incident to the operationjof said actuator for recording an indication ofthe fact that said operation had been performed.

4. In a calculating machine, the combination with a units adding pinion, a rack meshing with said pinion in all operations of the pinion and being movable in one direction to operate the pinion in all adding operations thereof, a pivoted abutment for limiting movement of said rack in said direction to prevent transfer operation of'said rack and pinion, a lever for displacing said abutment topermit said rack to move to operate said pinion in a transferoperation, an actuator for operating saidlover, a recording device controlled-by said actuator for recording an indication of the fact said operation had been performed, and optionally operable means controlling theactuation of said actuator. j 1

5. In a calculating machine, the combination with a units adding pinion; a rack meshing with said pinion in all operations of the pinion and being movablein pne direction to operate the pinion in all adding'operations thereof, a pivotedabutmentfor limit ing movement of said raclt' insaid direction to prevent transfer operation of said rack and pinion, a leverfor displacing said abutment to permit said rack to move to operate said pinion in :a-transfer-operation, an actuator for operating. said lever, a recording device controlled byrs'aid actuator for recording an indication of the fact: said operation had beener'formed, a device normally preventing t efactuation of saidactuator, and mechanism for controlling said device to permit operation of said actuator.-

6. In a calculating-machine, the=combination with a units adding pinion, arack meshing with said pinion in all operations of the pinion and being movable'in one direction to operate the pinion in all adding opera tions thereof, a pivoted abutment for limiting movement of said rack in said direction to prevent transfer operation of said rack and pinion, a lever for displacing. said abutment to permit said rack to move to operate said pinion in a transfer operation, mecha iiisin for recording an indication of the fact that such operation had been performed, and an element controlled bysaid mechanism for operating said lever to permit such operation of said rack and said adding pinion.

7. In a calculating machine, the combination with a units adding pinion, a rack meshing with said pinion in all operations of the pinion and being movable in one'direction to operate-thepinion in all adding operations thereof, a pivoted abutment for limiting movement of said rack in said direction to prevent transfer operation of said rack and'pinion, a lever for displacing said abutment to permit said rack to move to operate said pinion in a transfer 0 eration, mechanism for recording an in ication of the fact that such operation had been erformed, an element controlled by said mec anism for operating said lever to permit-such operation of said rack and said adding pinion, a device normally reventing operation of saidrecording mec anism, and means for controlling said device to permit operation of said mechanism as desired.

8. In a calculating machine, the combination of a units adding pinion, a rack movable in one direction to operate the'pinion in all adding operations thereof, a pivoted abutment for limiting movement of said rack to prevent transfer "operation of said rack and inion, a lever, an arm on said 1ever engaging said abutment, an actuator for operating said lever to 'move said abutment to position toperniit said rack to operate said pinion in a transfer. operation, an element normally preventing operation of said actuator, connections for moving-said element to-position to permit said actuator to operate said lever, and a recording device controlled by said actuator for recording an indication of the fact that. said operation had been performed. I 9. In a calculatingmachine, a rack, a spring. fori moving the rackzin a'transfer operation, a pivoted element for' preventing transfer'operation. of, said rack,t-a lever: for moving 881d element to osition: to permit transfer operationtof said rack, an' actuator for operating said lever; a-imeiiibe'rnormall y preventing said I factuator' from" operating said lever, mani ulative connections for moving said mem erto position-to permit said actuator" tooperate said lever, and a latcli device -for holding said connections and said'member in position to permit operation' of said actuator.

10. In a calculating machine, a rack, a spring for moving the rack in a transfer operation, a pivoted element for preventing transfer operationnof said rack, a leverfor movingsaid element to position to permit transfer operation of said rack, an actuator for operating said lever, a: member normally preventing said actuator from operating said lever, manipulative connections for moving said member to position to' permit said actuator to operate said lever, a latch device for holdin said connections and said member in position to permit operation of said actuator, a rock shaft, means operated by said shaft for releasing said latch device, ineans'for restoring said member to position to prevent operation of said actuator, and

means for recording an indication of the fact that said actuator and said rack had operated.

11. In an adding and calculating machine, a series of racks arranged in numerical orders, and all of said racks other than the rack in units order being operable in adding and transferring operations in ordinary work of addition, a movable part preventing transfer movement of the units irack when it is not desired to transfer into units order, an element for moving said part to position to permit transfer movement/of the units rack when it is desired to transfer into units order, an actuator for operating said element as required to move said part to enahle'the units rack to move in a transferring operation as desired,'means for operating said element automatically as desired, a settable device for controlling the automatic operation of saidactuator and limit ing the extent of movementv thereof when it'is desired to transfer into units ordermnd a latch for holding'said settable-device in set position to permit operation of said ac tuator. v

12. In an adding and calculating machine, a series of racks arranged in numerical orders, and all of said racks other than the rack in units order being operable in adding and transferring operations in ordinary work of addition, a movable part preventing transfer movement of the units rack when it is not desired to transfer into units order, an element for'moving said part to position to permit transfer movement of the units rack when it is desired totransfer into'units order, an actuator for operating said element as required to move saidpart to enable the unit rack to move in a transferring operation as desired, means for operating. said element automatically as desired, a settable device for controlling the automatic operation of said actuator and limiting the extent of movement thereof when it is desired to transfer into units order. a lat-ch for holding said settablc device in set position to permit operation of said actuator. and automatic means for releasing said latch as an incident to an operation of said actuator.

13. In an adding and calculating machine, a series of racks arranged in numerical orders, a device preventing transferring movement of the rack in units order when it is not desired to transfer into units order, a lever for moving said device to position to permit the rack in units order 'to transfer into units order, an actuator for said lever, an element preventing operation of said lever by said actuator when it is not desired to transfer into units order, a link for moving said element to and from position to prevent operation of said actuator, a lever for moving said link in one direction to move said element to position to permit operation of said actuator, a latch device for holding said last-named lever in the po sition to which it is moved, means for releasing said latch device, and a spring for operating said link in the opposite direction to move said element to position to prevent operation of said actuator.

14. In an adding and calculating machine, a series of racks arranged in numerical orders, a device preventing transferring movement of the rack in units order when it is not desired to transfer into units order, a lever for moving said device to position to permit the rack in units order to transfer into units order, an actuator for said lever, an element preventing operation of said lever by said actuator when it is not desired to transfer into units order, a link for -moving said element to and from position to prevent operation of said actuator, a leverfor moving Said link in one direction to move said element-to position .to permit operation of said aetuator,a latch device for holding said last-named lever in the position to which it is moved, means for releasing said latch device, a springfor operating said link in the opposite direction to move said element to position to prevent operation of said actuator, and a recording device controlled by said actuator for recording an indication of the fact that said actuator had operated and thatsaid rackhad moved in a-transfer operation.

15. In an adding and calculating machine, a series of racks arranged in numerical orders, and all of said racks'other than the rack in units order being operable in transferring operations when transferring is required in examples of addition, a part preventing transferring movement of the rack in units order when itis not desired to transfer into units order, a lever for moving said part to position to permit the rack in units order to move and transfer into units order when it is desiredto transfer into said units order. an actuator for operating said lever. a Spring for moving said actuator automatically at the desired time, a device preventing operation of said lever by said actuator when it is not desired to transfer into units order, means for adjusting said device to permit operation of said lever by said actuator when it is desired to transfer into units order, a latch for holding said adjusting means in position to retain said device in position to permit operation ofsaid lever by said actuator, and means for releasing said latch automaticallv during the time that said rack is operating.

16. In a machine of the character described, adding pinions arranged in numeri' cal orders, a recording mechanism cooperating with each adding pinion to record the items added and to operate the adding pinions in adding and transferring operations,

a special type-carrier controlling the operation of transferring to units adding pinion, and means for preventing operation of said type-carrier in all adding operations in which items are recorded bv said recording mechanisms.

17. In a machine of the character described, adding pinions arranged in numerical orders, a recording mechanism cooperating with each adding pinion to record the items added and to operate the adding pinions in addingand transferring operations, a special type-carrier controlling the operation of'i'ecording mechanism which transfers to units adding pinion, means for preventing operation of said type-carrier in all adding operations in which items are recorded by said recording mechanisms, and mechanism for permitting and causing operation of said special type-carrier to control the operation of the recording mechanism which transfers to units adding pinion as desired.

18. In a machine of the character described, adding pinions arranged in numerical orders, arccording mechanism cooperat ing with each adding pinion to record the items'added and to operate the adding pinions" in adding and transferring operations, a special type-carrier controlling the operation of the recording mechanism which transfers to units adding pinion,' means for preventing operation ofsaid "typecarrier in all adding operations in which items are re-' corded by said recording mechanisms. mechanism for permitting and causing operation of said special type-carrier tocontrol the operation ofthe recording mechanism which transfers to units adding 'pinionas desired, and to print ii visual designation 6f the fact that such operatiomhad been performed.

f19.In a 'machine of the character described, the combinationwith adding and recording mechanism"opera'ble to pertorm calculations and to'record the items and the results thereof, of a special type-carrier for controlling a part of Said mechanisms when said mechanisms are operated in subtracting operations, means for preventing operation of said type-carrier when said mechanisms are operated in ordinary adding and recording operations, a device settable to permit and to limit movement of said type-carrier, and means whereby said type-carrier will control a. part of the recording mechanism and thereby its associated part of the adding mechanism as an incident to operation of said type-carrien' V l 20. In a] machine of the character described, the combination with adding and recording mechanism operable to perform calculations and to record the items and the results thereof, of a special type-carrier for controlling a part of said mechanisms when said mechanisms are operated in subtracting operations, means for preventing operation of said type-carrier when said mechanisms are operated in ordinary adding and recording operations, a device settable to permit and to limit movement of said type-carrier, means whereby said type-carrier will control a part of the recording mechanism and thereby its associated part of the adding mechanism as an incident to operation of said type-carrier, and print a designation of the fact that such o eration had occurred.

21. In a machine of the character dc scribed, a series of adding pinions arranged in numerical orders, racks for operating said adding pinions in adding and transferring operations, an abutment controlling the transfer operations of one of said racks a lever for moving said abutment to permit transfer operation of the corresponding rack, an actuator for operating said lever,

means for preventing or permitting operation ofsaid actuator as desired, and means for recording a visual designation of the fact that said operations had occurred.

22. In a machine of the character de scribed, a series of adding pinions, racks for operating said adding pinions in adding and transferring operations, an abutment controllingthe transfer operations of orie of said racks, an element for moving said abutment to permit transfer operation of the corresponding rack, an actuator for operatsaid element to movesaid abutment, and a type'controlled by said actuator for printing a'visual indication of the fact that'said operations had occurred.

' 23, In a machine of the character described, a series of addingpinions, racks for operating said, adding pinions in adding and transferring-operations,"an abutment controlling the transfer operations of one of said racks, an element for moving said abutment to permit transfer operation of the corresponding rack, and a device operable to print a designation of the fact that such transfer 'operat'ion'had occurred and to op- .erate said element to permit such transfer operation of the corresponding rack.

24:. In a machine of the characer described, a type-carrier operable in recording operations, means for controlling the recording operations of said type-carrier, a rack arranged to operate in adding and transferring operations, an abutment controlling the transfer operations of said rack, a lever for moving said abutment to permit said" rack to operate in transferring operations, and means supported by said typecarrier for operating said lever.

25. In a machine of the character described, a special type-carrier for use in printing designating characters to indicate special operations, means for controlling the operations of said type-carrier, a rack operable in adding and transferring opera- [ill tions, an abutment controlling the transfer operations of said rack, a lever for moving a d a n to p s tion p 'rm t for operation of said rack, and'means where by said type-carrier will operate saidlever. 26. In a. machine of ti fiharacter do: scribed, a series of type-carriers arranged in denominational orders for recording the i i s of t m in dd ga dt ansierfie vice associated with eaehof said type car riers, a special type-carrier to. the right adjacent to the type-carrier in nnits order, a spring for operating the SPQCiQIrtYQQsQflI. rier in one direction to position for printing a designating character adjacent to'an i'te m printed by the'ty'pe-carriersj in denominational orders, a pivoted member for prevent.- ing effective operation of said'speqial type.- carrier by said spring, connections. for positioning said member to permit movement of said special type-carrier andto lainituegctent of movement thereof when tiiqtypecarriers in denominational ordersaregpperated to record an item an element preys ting transfer movement of I tlie .a.dd i,ng, evice controlled by the yp -ca rier ia-im pr'den and means p rat d by said spli iaMyPe carrier for QSiti ningLsaideIementi p,ermit -the adding device fls S -fi afied wlttifthe type-carrier in units order .tqfipeliate' a transferring operationi 1 27. In a machine of thec a ct scribed, a series of typekcarriers arran in denominational rd, -recordi ig. digits o t s,ien1i di igees1 transf r-1d vice associated with gacl i' saidji y pel riers, a special typescarrien' p iacent t t e ar a as a 3 not a Spring r p r tin 1 intense n o direc n we fig t i ttnfiii 1 a de g ng c racter asse to printedby 'the type-qarrleijs denonnnas e l, orde" aipiveea r relat venting efi'ective, operatiqn. oi sa'i L special type-carrier by said i sfir I g, .ghoula;- on member, i.pmie eo.ir;haanneal type-carrier arranged to engage shoulders to limit extent oj inovernent of said special type-carrier; connections for positioning sajd member to; permit; move. ment of said special type-scarrier andl to limit xtent of movement thereof whenthe typecarriers in denominational orders} arewo p crated to record an item, elementlpre r n g rans e mov e t lei t ieaddin device controlled. by the type arrier units order, and, means .,operated .,hy special type-carrier for positioning element to permit the adding device associated with the type-carrier in i nitsordento operate in a transferring operation. 2 8. In a machine. of the character-described, a series of type-carriers arrangedin denominational orders for recording the te ng fia refinesn least-m s digitsofiitems, an adding, and transfer de- 'c'e associated with each of said type-car iot a spe ia yP -wn fi e r ght, adjacent to the type-carrier. in units order, a spring for actuating said special type-can rier in one direction to position for printi a designatin character adjacent to an item printed by t ev tyne-carriers in denomirrational orders, a pivoted.- member for preventing efl'ective operation of said typecarrier. by said spring, mani ulative connections for setting said mom or to permit movement of said" special type-carrier, an element preventing transfer. movement of the'adding device controlled bythe typecarrier innnits order, meansfoperated by said special type carrier for operating said e ement to position to permit the adding dcvices associated with the type-carrier in nnits orderto operate in transferring operation, and automatic means for restoring said pivoted memberito its initial osition'. i

29. In amachine of the ciaracter de-, scribed, a series of t percar-riers arranged in denorrnnatipnal or ers for recording the digitsof itcmspan addingandtransfer de vice associated-with each of said type-carriers,.a special type-carrier to the rightadjacent to the: typercarrier in units order movable in'one direction to osition to r 'iet a de igna i shfl fee er di n is an i are .by't eyr ie s. n d n irrationalv orders and position the. transer det q ass ci t d wanna u y arrears atreas r flghrm m p etes membiirienrrerantiaasveh op ra etidi p ial a e-ear er, cna ons. for

he perm s ehn aid sp' ee pezearrier' d limit.33K??? il'WYQQQQitHiiTQQfIwhen the yn le ms i si nem aatieeal w en r e at d; te r ard a item, ae lmee sfor sea -ti s? idr p e e y e ie to p sition to print adesignating character andto opearate' therunits transfer: device as afore- Sfllt.-.. A1,: p I j 0 In a machine of the character described, a series of type-carriers arranged in denominational orders v for recording the digits of. items, an adding and transfer devicea ssociate dwith each of, said type-carriers, a special type carrier to the right adjacent to the type-carrier in mits order mopvable in one direction to position to print a designating-character adjacent to an item printed by the type-carriers. in denominationalorders and .topositionthe transferdevice associated with the units. type-carrier for atransferring operation, a pivoted member for-preventing such operation of said special type-carrier, connections for positioning said member to permit such'operation of said special type-carrier and tolimit extent of movement thereof when the typecarriers in denominational orders are operated to record an item, means for operating said special type-carrier to position to print a designating character and to operate the units transfer device as aforesaid, a latch device for holdin said connections in position to retain said member in the position in which it is placed by said connections, and means for releasing said latch device after said special type-carrier has been 10 stopped by said member.

ALEXANDER F. W. GROGEL. BRUCE H. TINGLEY. 

